I've got a 90 Prelude Si, B20A5, is there any direct bolt in motors. B18 maybe? if it does not directly bolt in, what mods would I have to do? I'm going to Wyoming Tech in October for High performance engine and chassis fab., so I should be able to do this when I graduate.

 

I'm not sure about any drop in engines, some of the 3rd gen owners should know though. You will have to weld engine mounts onto the frame of the car if there aren't any engines that bolt in.

 

You might want to check with Hasport or Place racing. They make a lot of kits. If you see a kit that's made for it, rest assured you can fit is in there.

As for what motors will fit: anything, if you got the $$$$ then someone has a way.